baber/WOPTO huggingface dataset:
Patent GB-1250848-A (GB)
IPC: C07C45/26
Filed: 1969-03-07
Abstract: 1,250,848. Production of acetaldehyde. BADISCHE ANILIN- & SODA-FABRIK A.G. 7 March, 1569-[8 March, 1968], No. 12118/69. Heading C2C. Acetaldehyde is prepared by passing acetylene into an aqueous acid reaction medium containing a mercury salt wherein a portion of the reaction medium is withdrawn and recycled into the reaction medium at a rate of 1-100 metre/sec. at the point of entry of the acetylene, the acetylene and the recycled reaction medium being introduced through separate openings into the reaction medium. The rate is preferably 10-30 metres/sec. and the ratio of acetylene to recycled liquid is 1 : 0À1 to 1 : 10. The withdrawn liquid (by pump 3) and the acetylene, entering at 7, are introduced through a nozzle 5 into a chamber 2 situated in the reaction vessel 1 and extending in the direction of introduction of the liquid, the mean diameter of the inlet opening being 2-50 times the mean diameter of the liquid nozzle 4 and the length of the chamber being 2-30 times its hydraulic diameter.
Patent GB-1251308-A (GB)
IPC: G11B5/127
Filed: 1969-12-24
Abstract: 1,251,308. Magnetic heads. BURROUGHS CORP. 24 Dec., 1969 [10 Feb., 1969], No. 62910/69. Heading G5R. To reduce wear, a magnetic head 10 has one or more inserts 30, 32, 34 located in transverse grooves 20, 22, 24 and secured to longitudinal margins 16, 18 outside the grooves. The inserts either have co-operating faces 54, 58, 60 whereby attachment of the outer ones also secures the centre, or vice versa, or the inserts are formed as an integral structure (Fig. 5, not shown). The inserts are fixed by screws and epoxy and are of sintered stainless steel, brass or aluminium to match the head body 12. The lands 26, 28 bordering the centre groove contain one or more write and check-read gaps.
Patent GB-1251321-A (GB)
IPC: D01H1/20
Filed: 1967-08-19
Abstract: 1,251,321. Spinning and twisting machines. A. J. T. COUSINS. 18 Nov., 1968 [19 Aug., 1967], No. 38302/67. Heading DID.  A spinning or twisting machine has a driving gear 34 and driven gears 22, 24, 26, 28 rotatable about parallel axes and the gears 22, 24, 26 are mounted on a carrier 20 rotatable about the shaft of gear 28 so that either gear 22 or gear 26 can be brought into engagement with the driving gear 34 and the direction of rotation of gear 28 reversed. In the form shown a main shaft 10, driven by a reversible electric motor, directly drives the spindles and drives the drafting rollers through the reversing mechanism, the drive being transmitted to the rollers by a chain 18 associated with gear 28. To change from inserting S-twist to inserting Z-twist or vice versa the direction of rotation of main shaft 10 is reversed and the reversing mechanism operated so that the rollers continue to be driven in the same direction.
Patent GB-1251476-A (GB)
IPC: B64C23/00
Filed: 1970-05-22
Abstract: 1,251,476. Deflecting propulsion jets. ROLLSROYCE Ltd. 22 May, 1970, No. 24834/70. Heading B7G. A gas turbine engine has a collapsible cascade of deflector vanes adapted for movement between an inoperative position in the engine suspension means in which position the vanes are collapsed and an operative position in the efflux from the engine in which position the vanes are extended. The cascade which includes vanes 22 and struts 36, 42 and 44 is made collapsible by pivotally jointing all the parts of the cascade together by means of spherical joints 40. In order to effect the collapsing of the cascade as it is retracted into a bay in the pylon supporting the engine, two links 46, 48 are each spherically jointed at one end 50 to the pylon and at the other end 52 to a respective strut 42, 44. As the strut 36 is pivoted about an axis 38 (by means not shown), links 46, 48 are simultaneously caused to pivot about their ends 50 and struts 42, 44 follow an arcuate path which in turn folds the deflector vanes as shown in Fig. 4. The deflector vanes in the extended position may be arranged to direct engine efliux upwards on to the trailing edge flaps of an aircraft wing so as to improve lift at low forward speeds (Fig. 2, not shown). Alternatively, efflux is directed downwards or sideways to give V.T.O.L. or S.T.O.L. capability or to give directional control, or to provide pitch and/or yaw control, of the aircraft.
Patent GB-1252241-A (GB)
IPC: C08F279/04
Filed: 1970-01-08
Abstract: 1,252,241. Thermoplastic polycarbonate compositions. FARBENFABRIKEN BAYER A.G. 8 Jan., 1970 [8 Jan., 1969], No. 973/70. Heading C3R. Thermoplastic polycarbonate moulding compositions comprise 90.5-99.5 parts by weight of a polycarbonate derived from a dihydric phenol and 0À5-9À5 parts by weight of a graft copolymer containing (a) 50-90% by weight of polybutadione, (b) 5-40% of acrylonitrile, and (c) 5-45% by weight of an aromatic vinyl hydrocarbon. In the examples, pigmented compositions are obtained by melt mixing: (1) TiO 2 , bisphenol A polycarbonate and polybutadiene/styrene/acrylonitrile graft copolymer, and (2) as in (1) but with Cadmopure Red BN in place of TiO 2 .
Patent GB-1256505-A (GB)
IPC: B65G69/00
Filed: 1968-04-05
Abstract: 1,256,505. Shoots. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. 26 March, 1969 [5 April, 1968], No. 16643/68. Heading B8S. Rods 12 rolling down slope 11 are braked by two polythene tubes 8 filled with a liquid, and are fmally stopped by a stop 14. Each tube contains a spacer strip 10 within it to permit escape of liquid up the tube as the rod goes downwards. Air may be used instead of liquid, the spacer strip may be positioned outside the tube and the tubes in pairs may overlap to provide a sufficient length of tube down a slope.
Patent GB-1258811-A (GB)
IPC: H01H33/66
Filed: 1969-01-02
Abstract: 1,258,811. Vacuum switches. INSTITUT PRUFFELD FUR ELEKTRISCHE HOCHLEISTUNGSTECHNIK. 2 Jan., 1969, No. 322/69. Heading H1N. The arc extinction chamber of a vacuum switch comprises a metal and insulating housing, at least the insulating parts of the housing being of multi-walled construction, the cavities 9 between the walls being filled with a gas at a pressure between that in the chamber and atmospheric. The switch shown comprises inner and outer insulating cylinders 1b, la sealed together at their ends and sealed to metal end plates 3, 4. Fixed contact 5 is carried by end plate 3 and moving contact 6 by a metal bellows 7 secured to plate 4. A metal shield 8 surrounding the contacts screens the insulating cylinder 1b from metal vapour. In Fig. 2 (not shown), the inner insulating cylinder is sealed to the outer insulating cylinder by metal connectors. In Fig. 3 (not shown), the inner cylinder is made from two insulating annuli joined by a metal annulus, the inner cylinder being secured to the outer cylinder by metal connectors. In Fig. 4 (not shown), two double-walled insulating annuli are joined to a single walled metal annulus provided internally with screening projections. The cavity or cavities 9 may be filled with air SF 6  or inert gas. The insulating parts of the casing may be of ordinary glass or ceramics instead of the conventional gas impermeable glass or ceramics. Cooling passages may be provided in the cavities 9. Resistors, capacitors and rectifiers may be provided in the cavities.
Patent GB-1259136-A (GB)
IPC: F21V33/00
Filed: 1969-01-14
Abstract: 1,259,136. Table lamp. J. & F. SPRAYING & POLISHING CO. Ltd. 14 Jan., 1970 [14 Jan., 1969], No.2081/69. Heading F4R. A combined lamp and tray comprises a base 10 supporting the lampholder and lamp bulb, a tubular translucent member surrounding the bulb and extending upwardly from the base supported by posts 12, (13), 14, and a tray 26 supported at the top of the translucent member. The base 10 may be of any suitable shape or material such as turned wood, the diffuser is preferably of plastics material such as polythene and of any colour and may be patterned, and held to the posts 12, (13), 14, which again may be of any suitable shape or material such as tapering wooden members of rectangular section, by nuts and bolts. The tray 26 may be dished as at 27 to form an ashtray.
Patent GB-1259335-A (GB)
IPC: E04C2/20
Filed: 1969-10-31
Abstract: 1,259,335. Flooring tiles. E. GREGSON. 12 Oct., 1970 [31 Oct., 1969], No. 53389/69. Heading B2E.  A sheet or tile suitable for use as flooring is made by coating a plywood or asbestos board with a polyurethane, polyethylene or polyester resin, allowing the resin to partially set for a period of approximately one hour, applying a solventless colourless or white resin to the the coating, coating the solventless resin layer with coloured polyvinylchloride flakes whilst the resin is still fluid, but partially set, allowing the solventless resin to set for a period of 12 to 18 hours, applying a further coating of a clear resin and allowing this to cure for approximately 24 hours.. The edges of the tiles may be grooved to enable them to be assembled side by side by strips of metal, plastics or wood. The rear face of the sheet may be coated with a polyurethane to render it waterpoof. After the tiles have been laid a coat or coats of clear polyurethane, polyethylene or polyester resin may be applied over the surfaces of the tiles to seal the joints and present a durable surface finish.
Patent GB-1259611-A (GB)
IPC: D02H3/00
Filed: 1968-05-17
Abstract: 1,259,611. Unwiding packages. E. I. DU PONT DE NEMOURS & CO. 16 May, 1969 [17 May, 1968], No. 23746/68. Heading D1J. To prevent yarn 11 slipping off the edge of a rotatable package 10 during unwinding, it is guided by means of a pig tail 20 towards the centre of the package prior to its withdrawal at point P. The wishdrawal point P is preferably circumferentially spaced from the point G to which the yarn is guided, and the yarn may make more than one revolution of the package between the two points. In these subsequent revolutions, it may pass again through the pigtail 20, which is pivoted at 18 on an arm so that it may move towards the package axis as the package size decreases. The package is rotated by a driven roller 15.
Patent GB-1264090-A (GB)
IPC: G21C3/338
Filed: 1970-12-07
Abstract: 1,264,090. Fuel elements. COMMISSARIAT A L'ENERGIE ATOMIQUE. 7 Dec., 1970 [12 Dec., 1969; 20 Nov., 1970], No. 58057/70. Heading G6C. A nuclear fuel assembly comprises a cluster of fuel pins 10<SP>1</SP> disposed on a uniform lattice within a sleeve 14<SP>1</SP> through which a coolant is circulated, each fuel pin 101 being provided with a helical spacer member 12<SP>1</SP> which determines the spacing between each fuel pin and the adjacent pins or the sleeve. The distance to which each spacer member 12<SP>1</SP> of a peripheral fuel pin 10<SP>1</SP> projects radially from the pin in the zones in which the spacer member is applied against the sleeve is smaller than the radial distance of projection of the spacer members carried by the inner fuel pins 10<SP>1</SP>. The spacer members 10<SP>1</SP> are constituted by helically wound wires, the wire being flattened in those portions in which it is applied against the sleeve 14<SP>1</SP>. The result is a reduction in the rate of flow within the peripheral coolant sub-channels in order to obtain the same temperature at the outlets of all the sub-channels whether they are delimited by fuel pins alone or by both fuel pins and the sleeve. Alternatively, the spacer members can be constituted by helically wound fins which are truncated at those portions in which they are applied against the sleeve. In another embodiment (Fig. 9), the spacer members are constituted by helically wound wires, the wires 22e of each peripheral fuel pin having a smaller diameter than the wires 12e of the inner fuel pins and being threaded through tube sections , 28 of the same external diameter as the wires 12e, the tube sections 28 being placed in the zones in which the peripheral fuel pins bear on the inner fuel pins or on the adjacent peripheral fuel pins. The sleeve 14e is provided with internal longitudinal ribs 24e which reduce the cross-sectional area of the peripheral coolant sub-channels.
Patent GB-1264802-A (GB)
IPC: C09K11/06
Filed: 1968-02-22
Abstract: 1,264,802. Uses of luminescence. ARDROX Ltd. 19 Feb., 1969 [22 Feb., 1968], No. 8703/68. Heading C4S. A testing agent for detecting flaws comprises a liquid penetrant having dissolved therein a Rhodamine dye base salt of an inorganic acid visible in visible light and a salt of an acid containing lipophilic hydrocarbon groups of the same or a different Rhodamine dye base which fluoresces under U.V. radiation, the acids being selected so that the salts do not reduce the visibility or fluorescence of the other. The lipophilic groups may comprise aliphatic carboxylic acid salts. A single acid may contain anions and the lipophilic groups e.g. butyl, nonyl, aryl and alkyl aryl phosphonic acids, octyl sulphuric acid, benzene and dodecyl benzene sulphonic acids. The penetrant is glycol ether and kerosene preferably containing a glycol or polyglycol ester to improve the solubility of the dye, enhance the penetrating effect and increase water washability. An emulsifying agent may be added to improve rinsability.
Patent GB-1264815-A (GB)
IPC: C07C51/265
Filed: 1969-07-10
Abstract: 1,264,815. Benzene carboxylic acids. BADISCHE ANILIN- & SODA-FABRIK A.G. 10 July, 1969 [11 July, 1968], No. 34830/69. Heading C2C. Benzene carboxylic acids are prepared by reacting a benzene substituted by one or more alkyl, hydroxyalkyl or formyl groups with molecular oxygen in the liquid phase in a reaction zone in the presence of a heavy metal catalyst, an activator selected from bromides, peroxides or bromide- or peroxide-forming compounds and an alkane carboxylic acid at elevated temperature and pressure, wherein a vapour phase effluent is withdrawn from the reaction zone and fractionated at substantially reaction zone pressure, the vapour phase from the fractionation step is cooled to below 80‹ C. and at least 30‹ C. below reaction temperature but not below ambient temperature so as to form a condensed organic phase, a condensed aqueous phase and uncondensed material, the condensed organic phase is returned to the reaction zone, water is removed from the condensed aqueous phase to balance substantially the water formed in the reaction zone and the remainder of the aqueous phase is returned to the reaction zone, and uncondensed material from the fractionation is recycled as recycle gas to the liquid phase in the reaction zone.
Patent GB-1265855-A (GB)
IPC: G01B5/30
Filed: 1969-11-19
Abstract: 1,265,855. Measuring stretch. B. P. CHEMICALS Ltd. Nov. 13, 1970 [Nov. 19, 1969], No. 56548/69. Heading G1N. Apparatus for measuring the extension of a sample 1, Fig. 1, of a polymer material when subjected to a tensile load F comprises two rotary potentiometers 3, 4 whose spindles 7, 8 are provided with rubber rings 9, 10 which rest on the surface of the sample, the difference in rotation of the spindles being determined by applying a voltage across each potentiometer and measuring the change in voltage across their sliders, thus being proportional to the extension of the material.
Patent GB-1266454-A (GB)
Inventor: NAUTA W T
IPC: C07D303/22
Filed: 1969-12-23
Abstract: 1,266,454. Propanolamine derivatives. KONINKLIJKE PHARMACEUTISCHE FABRIEKEN N.V. 18 Dec., 1970 [23 Dec., 1969], No. 62736/69. Heading C2C.  1 - Amino - 3 - (di - 2,6 - xylylmethoxy) propan-2-ol and its acid addition salts are prepared by reacting l,2-epoxy-3-(di-2,6-xylylmethoxy)- propane with ammonia, optionally followed by salt formation. The base may be isopropylated and optionally converted to a salt. The above compounds possess antiarrhythmic activity, and may be administered in the form of pharmaceutical preparations containing them in association with a carrier.
Patent GB-1266598-A (GB)
IPC: G03B23/04
Filed: 1969-09-30
Abstract: 1,266,598. Stopping machines at definite positions; electromagnetically operated disc brakes. BRAUN A.G. 30 Sept., 1969 [2 Oct., 1968], No. 47924/69. Heading F2E. [Also in Divisions G2 and H2] A slide changer is provided with a motor 1 having a reduction gear train 2 operating parts of a projector through a shaft 6, a gear-wheel 7 being provided with a soft iron ring 8 associated with an electromagnet 11 which is energized when the motor is de-energized. In the operative state of the electromagnet, the electromagnet is bodily moved, core 12 being urged into contact with the ring 8 against the action of leaf-spring 9, so braking the drive mechanism. A yoke 13 of soft iron increases the braking- power of the electromagnet. The shaft 6 is coupled through further gearing to the slide changing member and the magazine-shifting mechanism of the slide projector. Switches 20, 21, are actuated by cams which are carried on the shaft 6 and are mutually displaced by 180 degrees. For a complete change of slide, a manual switch 22 is engaged with contact 22.1, the slide-changer being in its position for projection, push button 23 being in its upper position, and electromagnet 11 being energized through switch 20 and push button 23. Depression and release of the button 23 initiates the slide-changing process by energizing motor 1 and de-energizing the magnet 11. Rotation of the shaft 6 moves the switch 20 to complete a holding circuit for the motor 1 until the shaft completes a full revolution. Switch 20 is then returned to its initial position whereby the motor is de-energized and the brake is applied. A full change of slide is effected by moving a member from the display aperture into the magazine to release an exposed slide, shifting the magazine one compartment, and then bringing a fresh slide back to the display aperture. A half change of slide is effected when the shaft 6 performs a half-revolution, in bringing the slide-changing member from the display aperture into the magazine which is freed for a further shift by one compartment. For this purpose, switch 22 is engaged with contact 22.2, the motor being thereby energized until switch 21 is changed over by its cam, whereupon the electromagnet is energized. Return movement of the slide-changer is effected by moving switch 22 to the position 22.1 so that the motor runs until the switch 20 is actuated back to 20.1 at the end of another half-revolution of the shaft 6. In a modification, the electromagnet is fixed and the gear-wheel to be braked is adapted to be attracted against the force of a spring when the electromagnet is energized. At the same time the gear-wheel is uncoupled from another wheel on the driving side of the mechanism, Figs. 4a, 4b (not shown). In another arrangement, a slidable pinion is adapted to be frictionally engaged with a drive wheel, and is disengaged therefrom to be braked when the electromagnet is energized, Fig. 4c (not shown).
Patent GB-1288757-A (GB)
IPC: H01R13/11
Filed: 1968-09-24
Abstract: 1288757 Two-part couplings R F OXLEY 23 Sept 1969 [24 Sept 1968] 45204/68 Heading H2E An electrical socket contact, Fig. 4, is made by rolling into a cylinder a flat rectangular stamping of resilient metal, with slots cut in it, securing the overlapping ends, and crimping the central portion 22, to form a waist. The socket is then enclosed in an insulating housing 24, the open end of which is secured by a circular cover 28. A plug (Fig. 5, not shown) for use with the socket, comprises a contact portion which tapers away from its leading end which, in use, is located beyond the waist of the socket.  The invention may be applied to an edge connector, Fig. 10. In this case two flat metal sheets, with slots cut in them, are each bent in the centre and placed back to back in a housing, 40, thus forming a restricted opening for insertion of the plug board.
Patent GB-1290270-A (GB)
IPC: H01B1/00
Filed: 1970-08-21
Abstract: 1290270 Bending tempering and coating glass sheets PPG INDUSTRIES Inc 21 Aug 1970 [25 Aug 1969] 40308/70 Heading C1M A method of making bent tempered, coated glass sheets comprises supporting a flat glass sheet on an outline bending mould 80, heating the supported sheet in an enclosed atmosphere in a furnace 14 to a temperature sufficient to cause the sheet to sag into conformity with the bending mould 80, spraying at least the upper  surface of the sheet with a composition capable  of forming an electroconductive metal oxide coating on contacting the glass while the glass is still hot at a spraying station 16, discontinuing the spraying before the temperature of the glass falls below its strain point and finally tempering the coated glass sheet by rapidly chilling both surfaces of the bent glass at a quenching station 18. Prior to the heating one or more strips of a frit capable of fusing to said glass sheet to form a strip or strips of electro-conductive material when fused may be applied to a surface of the glass sheet. Two preferred compositions are in percentages by weight, PbO 7À5; B 2 O 3  1À0; SiO 2  1À5; flake silver 70À0; French fat oil 12À5; turpentine 7À5 and finely divided silver 72À6; PbO 9À3; SiO 2  1À7; B 2 O 3  1À4; water 7À5; ethyl alcohol 7À5. The coating compositions preferably contain an organic solvent, an organic tin compound and an ionizable fluorine compound. The furnace 14 is of the tunnel type and includes entrance and exit doors 36, 37 each counterweighted by weights suspended from a pulley contained in a respective motor-driven pulley housing 38. The roof and floor of the furnace 14 are each provided with nine longitudinal rows of electric resistance heating elements 40. The spray station 16 includes a chamber enclosed by a hood 42 leading to a vacuum exhaust 43. A spray gun 46 is secured to a swivel bar 49, which bar may be oscillated about its axis by means of a key 50 slidably mounted on one end thereof and activated through crank 51 by piston and cylinder device 52, 53 and may be axially reciprocated by transversely mounted piston and cylinder device 56, 57. The quenching station includes a longitudinally reciprocable carriage 65 and two pairs of plenums mounted on the carriage and on either side of the glass path each pair including an upper plenum 68 and a lower plenum 69 each having nozzle openings 70 for projecting fluid on to the glass sheet while being reciprocated. The mould 80 is carried on runners 81 which rest on rotatably driven conveyer rolls 12.
Patent GB-1290419-A (GB)
IPC: H01L29/76
Filed: 1970-12-23
Abstract: 1290419 Field-effect transistors TEXAS INSTRUMENTS Ltd 23 Dec 1970 61262/70 Heading H1K A transistor is formed by exposing three areas of the surface of a semi-conductor body, by depositing metal overall, and by etching away unwanted metal to form source, gate, and drain electrodes. The previously provided source and drain regions 5, 6 are of the same conductivity type as the remainder of the body but are of enhanced conductivity. If the body is of gallium arsenide and the metal is gold or if the body is silicon and the metal platinum, the gate contact is a Schottky barrier and the source and drain contacts are ohmic; if the body is of indium antimonide or germanium and the metal is indium or if the body is silicon and the metal is aluminium, the gate contact may be either a Schottky barrier or, if the structure is heated after deposition of the metal, an alloy PN junction, the source and drain contacts again being ohmic. As shown, the N-type silicon body 2 is formed by epitaxial growth on a nearintrinsic P-type silicon substrate 1, the source and drain regions 5, 6 are formed by phosphorus diffusion using a silicon oxide mask, and the electrodes are of aluminium, the structure being alloyed to yield a degenerate P - type gate region 8.
Patent GB-1295127-A (GB)
IPC: B31B160/10
Filed: 1970-06-30
Abstract: 1295127 Gumming envelopes or bags B. PAHLITZSCH 30 June 1970 [17 July 1969] 31488/70 Heading B5D Strips of adhesive are applied to overlapping envelopes or bags 3 by a gumming roller 4 which is driven independently of conveying rollers 2 and in such a direction that its lower periphery moves in the opposite direction to the envelopes or bags. The resultant scraping action promotes the removal of adhesive from the roller 4 so that, when a self-sealing adhesive is used, the formation of hard latex granules on the gummed surfaces is avoided. So that discrete strips of adhesive are applied, a cam 19 rhythmically lifts the roller 4 and its reservoir 6 away from the envelopes or bags.